body{
    background-color: gainsboro;
}
.top{
    height: 44px;
    width: 100%;
    background-color: darkcyan;
    line-height: 44px;
}
.top span{
    float: left;
    margin-left: 200px;
    color: white;
    font-size: 22px;
    width: 800px;
}
section{
    margin: 30px auto;
    width: 1200px;
    height: 600px;
    background-color: white;
    border-radius: 4px;
    border: 1px solid #e1e2e5;
    box-shadow: 0 2px 4px rgba(0,0,0,.14);
    overflow: hidden;
}
.back{
    float: right;
    width: 200px;
}
.back a{
    color: white;
}
.back a:hover{
   color: black;
}
.head-up{
    width: 1200px;
}
.up{
    float: left;
    width: 1000px;
    height: 55px;
    border-bottom: 1px solid #e1e2e5;
    line-height: 55px;
    padding-left: 15px;
}
.all{
    float: left;
    width: 200px;
    height: 55px;
    text-align: center;
    line-height: 55px;
    cursor: default;
}
.all a:hover{
    color: crimson;
}
.up input{
    width: 80px;
    height: 25px;
    border: 1px solid gray;
    margin-right: 5px;
}
.up button{
    width: 50px;
    height: 25px;
    background-color: #00a1d6;
    color: white;
    border-radius: 4px;
    margin-left: 5px;
}
.up button:hover{
    background-color: #00AAFF;
}
.mid{
    width: 100%;
    height: 520px;
    overflow: auto;
    word-wrap: break-word;
    margin-top: 10px;
}
.mid table{
    width:100%;
    border-collapse:collapse;
    text-align:center;
}
td,th{
    border:1px solid #333;
}
thead tr{
    height:40px;
    background-color: ghostwhite;
}
tbody tr{
    height: 30px;
}
tbody tr{
    height: 30px;
}